<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<style>
.left {
    border: blue solid 1px;
    width: 45%;
    height: 500px;
    display: inline-block;
}
.right {
    border: red solid 1px;
    width: 45%;
    height: 500px;
    display: inline-block;
}
.map {
    border: green solid 1px;
    
    width: 90%;
    height: 350px;
}
</style>
<body>
    <div class="left">
        <iframe src="zhuxing.html" width="100%" height="100%;" frameborder="0"></iframe>
    </div>
    <div class="right">
        <iframe src="map.html" width="100%" height="100%" frameborder="0"></iframe>
    </div>
    <div class="map">
        <iframe src="line-stack.html" width="100%" height="100%;" frameborder="0"></iframe>
        <!-- <iframe src="zhuxing.html" width="100%" height="100%;" frameborder="0"></iframe> -->
    </div>
</body>
</html>